Here is some code that I use that is attached to a command button (Command28). The report is named Submission. You need to reference the Record ID shown in the DoCmd line for the particular record you want to show in your report. You will have to change your Form Name, Report Name, Command Button Name and Record ID to match what is in your Database.
Code:
Private Sub Command28_Click()
On Error GoTo Err_Command28_Click
Dim stDocName As String
stDocName = "Submission"
DoCmd.OpenReport stDocName, acViewPreview, , "[ID]=Forms!frmClients!ID"
Exit_Command28_Click:
Exit Sub
Err_Command28_Click:
MsgBox Err.Description
Resume Exit_Command28_Click
End Sub